"use strict";
const canvas = document.getElementById("canvas1");
const context = canvas.getContext("2d");
// 设置阴影红色，同时模糊大小为10
// 填充个淡淡的颜色，以示尊敬
context.fillStyle = 'blue';
context.shadowBlur = 10;
context.shadowColor = 'red';
context.shadowOffsetX = 180;
context.shadowOffsetY = 200;
context.fillRect(40, 40, 160, 40);
